tim/prune/threedee/Java3DWindow.java

   1 package tim.prune.threedee;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.FlowLayout;
   5 import java.awt.Font;
   6 import java.awt.GraphicsConfiguration;
   7 import java.awt.GraphicsEnvironment;
   8 import java.awt.event.ActionEvent;
   9 import java.awt.event.ActionListener;
  10 import java.awt.event.WindowAdapter;
  11 import java.awt.event.WindowEvent;
  12 import java.awt.geom.GeneralPath;
  13
  14 import javax.media.j3d.AmbientLight;
  15 import javax.media.j3d.Appearance;
  16 import javax.media.j3d.Billboard;
  17 import javax.media.j3d.BoundingSphere;
  18 import javax.media.j3d.BranchGroup;
  19 import javax.media.j3d.Canvas3D;
  20 import javax.media.j3d.Font3D;
  21 import javax.media.j3d.FontExtrusion;
  22 import javax.media.j3d.GeometryArray;
  23 import javax.media.j3d.GraphicsConfigTemplate3D;
  24 import javax.media.j3d.Group;
  25 import javax.media.j3d.Material;
  26 import javax.media.j3d.PointLight;
  27 import javax.media.j3d.QuadArray;
  28 import javax.media.j3d.Shape3D;
  29 import javax.media.j3d.Text3D;
  30 import javax.media.j3d.Texture;
  31 import javax.media.j3d.TextureAttributes;
  32 import javax.media.j3d.Transform3D;
  33 import javax.media.j3d.TransformGroup;
  34 import javax.swing.JButton;
  35 import javax.swing.JFrame;
  36 import javax.swing.JOptionPane;
  37 import javax.swing.JPanel;
  38 import javax.vecmath.Color3f;
  39 import javax.vecmath.Matrix3d;
  40 import javax.vecmath.Point3d;
  41 import javax.vecmath.Point3f;
  42 import javax.vecmath.TexCoord2f;
  43 import javax.vecmath.Vector3d;
  44
  45 import tim.prune.DataStatus;
  46 import tim.prune.FunctionLibrary;
  47 import tim.prune.I18nManager;
  48 import tim.prune.data.Track;
  49 import tim.prune.function.Export3dFunction;
  50 import tim.prune.function.srtm.LookupSrtmFunction;
  51 import tim.prune.gui.map.MapSourceLibrary;
  52 import tim.prune.save.GroutedImage;
  53 import tim.prune.save.MapGrouter;
  54
  55 import com.sun.j3d.utils.behaviors.vp.OrbitBehavior;
  56 import com.sun.j3d.utils.geometry.Box;
  57 import com.sun.j3d.utils.geometry.Cylinder;
  58 import com.sun.j3d.utils.geometry.GeometryInfo;
  59 import com.sun.j3d.utils.geometry.NormalGenerator;
  60 import com.sun.j3d.utils.geometry.Sphere;
  61 import com.sun.j3d.utils.image.TextureLoader;
  62 import com.sun.j3d.utils.universe.SimpleUniverse;
  63
  64
  65 /**
  66  * Class to hold main window for java3d view of data
  67  */
  68 public class Java3DWindow implements ThreeDWindow
  69 {
  70         private Track _track = null;
  71         private JFrame _parentFrame = null;
  72         private JFrame _frame = null;
  73         private ThreeDModel _model = null;
  74         private OrbitBehavior _orbit = null;
  75         private double _altFactor = -1.0;
  76         private ImageDefinition _imageDefinition = null;
  77         private GroutedImage _baseImage = null;
  78         private TerrainDefinition _terrainDefinition = null;
  79         private DataStatus _dataStatus = null;
  80
  81         /** only prompt about big track size once */
  82         private static boolean TRACK_SIZE_WARNING_GIVEN = false;
  83
  84         // Constants
  85         private static final double INITIAL_Y_ROTATION = -25.0;
  86         private static final double INITIAL_X_ROTATION = 15.0;
  87         private static final String CARDINALS_FONT = "Arial";
  88         private static final int MAX_TRACK_SIZE = 2500; // threshold for warning
  89         private static final double MODEL_SCALE_FACTOR = 20.0;
  90
  91
  92         /**
  93          * Constructor
  94          * @param inFrame parent frame
  95          */
  96         public Java3DWindow(JFrame inFrame)
  97         {
  98                 _parentFrame = inFrame;
  99         }
 100
 101
 102         /**
 103          * Set the track object
 104          * @param inTrack Track object
 105          */
 106         public void setTrack(Track inTrack)
 107         {
 108                 _track = inTrack;
 109         }
 110
 111         /**
 112          * @param inFactor altitude factor to use
 113          */
 114         public void setAltitudeFactor(double inFactor)
 115         {
 116                 _altFactor = inFactor;
 117         }
 118
 119         /**
 120          * Set the parameters for the base image and do the grouting already
 121          * (setTrack should already be called by now)
 122          */
 123         public void setBaseImageParameters(ImageDefinition inDefinition)
 124         {
 125                 _imageDefinition = inDefinition;
 126                 if (inDefinition != null && inDefinition.getUseImage())
 127                 {
 128                         _baseImage = new MapGrouter().createMapImage(_track, MapSourceLibrary.getSource(inDefinition.getSourceIndex()),
 129                                 inDefinition.getZoom());
 130                 }
 131                 else _baseImage = null;
 132         }
 133
 134         /**
 135          * Set the terrain parameters
 136          */
 137         public void setTerrainParameters(TerrainDefinition inDefinition)
 138         {
 139                 _terrainDefinition = inDefinition;
 140         }
 141
 142         /**
 143          * Set the current data status
 144          */
 145         public void setDataStatus(DataStatus inStatus)
 146         {
 147                 _dataStatus = inStatus;
 148         }
 149
 150         /**
 151          * Show the window
 152          */
 153         public void show() throws ThreeDException
 154         {
 155                 // Make sure altitude exaggeration is positive
 156                 if (_altFactor < 0.0) {_altFactor = 1.0;}
 157
 158                 // Set up the graphics config
 159                 GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
 160                 if (config == null)
 161                 {
 162                         // Config shouldn't be null, but we can try to create a new one as a workaround
 163                         GraphicsConfigTemplate3D gc = new GraphicsConfigTemplate3D();
 164                         gc.setDepthSize(0);
 165                         config = GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getBestConfiguration(gc);
 166                 }
 167
 168                 if (config == null)
 169                 {
 170                         // Second attempt also failed, going to have to give up here.
 171                         throw new ThreeDException("Couldn't create graphics config");
 172                 }
 173
 174                 // Check number of points in model isn't too big, and suggest compression
 175                 Object[] buttonTexts = {I18nManager.getText("button.continue"), I18nManager.getText("button.cancel")};
 176                 if (_track.getNumPoints() > MAX_TRACK_SIZE && !TRACK_SIZE_WARNING_GIVEN)
 177                 {
 178                         if (JOptionPane.showOptionDialog(_parentFrame,
 179                                         I18nManager.getText("dialog.3d.warningtracksize"),
 180                                         I18nManager.getText("function.show3d"), JOptionPane.OK_CANCEL_OPTION,
 181                                         JOptionPane.WARNING_MESSAGE, null, buttonTexts, buttonTexts[1])
 182                                 == JOptionPane.OK_OPTION)
 183                         {
 184                                 // opted to continue, don't show warning again
 185                                 TRACK_SIZE_WARNING_GIVEN = true;
 186                         }
 187                         else {
 188                                 // opted to cancel - show warning again next time
 189                                 return;
 190                         }
 191                 }
 192
 193                 Canvas3D canvas = new Canvas3D(config);
 194                 canvas.setSize(400, 300);
 195
 196                 // Create the scene and attach it to the virtual universe
 197                 BranchGroup scene = createSceneGraph();
 198                 SimpleUniverse u = new SimpleUniverse(canvas);
 199
 200                 // This will move the ViewPlatform back a bit so the
 201                 // objects in the scene can be viewed.
 202                 u.getViewingPlatform().setNominalViewingTransform();
 203
 204                 // Add behaviour to rotate using mouse
 205                 _orbit = new OrbitBehavior(canvas, OrbitBehavior.REVERSE_ALL | OrbitBehavior.STOP_ZOOM);
 206                 BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
 207                 _orbit.setSchedulingBounds(bounds);
 208                 u.getViewingPlatform().setViewPlatformBehavior(_orbit);
 209                 u.addBranchGraph(scene);
 210
 211                 // Don't reuse _frame object from last time, because data and/or scale might be different
 212                 // Need to regenerate everything
 213                 _frame = new JFrame(I18nManager.getText("dialog.3d.title"));
 214                 _frame.getContentPane().setLayout(new BorderLayout());
 215                 _frame.getContentPane().add(canvas, BorderLayout.CENTER);
 216                 _frame.setIconImage(_parentFrame.getIconImage());
 217                 // Make panel for render, close buttons
 218                 JPanel panel = new JPanel();
 219                 panel.setLayout(new FlowLayout(FlowLayout.RIGHT));
 220                 // Add button for exporting pov
 221                 JButton povButton = new JButton(I18nManager.getText("function.exportpov"));
 222                 povButton.addActionListener(new ActionListener() {
 223                         /** Export pov button pressed */
 224                         public void actionPerformed(ActionEvent e)
 225                         {
 226                                 if (_orbit != null) {
 227                                         callbackRender(FunctionLibrary.FUNCTION_POVEXPORT);
 228                                 }
 229                         }});
 230                 panel.add(povButton);
 231                 // Close button
 232                 JButton closeButton = new JButton(I18nManager.getText("button.close"));
 233                 closeButton.addActionListener(new ActionListener()
 234                 {
 235                         /** Close button pressed - clean up */
 236                         public void actionPerformed(ActionEvent e) {
 237                                 dispose();
 238                                 _orbit = null;
 239                         }
 240                 });
 241                 panel.add(closeButton);
 242                 _frame.getContentPane().add(panel, BorderLayout.SOUTH);
 243                 _frame.setSize(500, 350);
 244                 _frame.pack();
 245                 // Add a listener to clean up when window closed
 246                 _frame.addWindowListener(new WindowAdapter() {
 247                         public void windowClosing(WindowEvent e) {
 248                                 dispose();
 249                         }
 250                 });
 251
 252                 // show frame
 253                 _frame.setVisible(true);
 254                 if (_frame.getState() == JFrame.ICONIFIED) {
 255                         _frame.setState(JFrame.NORMAL);
 256                 }
 257         }
 258
 259         /**
 260          * Dispose of the frame and its resources
 261          */
 262         public void dispose()
 263         {
 264                 if (_frame != null) {
 265                         _frame.dispose();
 266                         _frame = null;
 267                 }
 268         }
 269
 270         /**
 271          * Create the whole scenery from the given track
 272          * @return all objects in the scene
 273          */
 274         private BranchGroup createSceneGraph()
 275         {
 276                 // Create the root of the branch graph
 277                 BranchGroup objRoot = new BranchGroup();
 278
 279                 // Create the transform group node and initialize it.
 280                 // Enable the TRANSFORM_WRITE capability so it can be spun by the mouse
 281                 TransformGroup objTrans = new TransformGroup();
 282                 objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
 283
 284                 // Create a translation
 285                 Transform3D shiftz = new Transform3D();
 286                 shiftz.setScale(0.055);
 287                 TransformGroup shiftTrans = new TransformGroup(shiftz);
 288
 289                 objRoot.addChild(shiftTrans);
 290                 Transform3D rotTrans = new Transform3D();
 291                 rotTrans.rotY(Math.toRadians(INITIAL_Y_ROTATION));
 292                 Transform3D rot2 = new Transform3D();
 293                 rot2.rotX(Math.toRadians(INITIAL_X_ROTATION));
 294                 TransformGroup tg2 = new TransformGroup(rot2);
 295                 objTrans.setTransform(rotTrans);
 296                 shiftTrans.addChild(tg2);
 297                 tg2.addChild(objTrans);
 298
 299                 // Base plane
 300                 Appearance planeAppearance = null;
 301                 Box plane = null;
 302                 planeAppearance = new Appearance();
 303                 planeAppearance.setMaterial(new Material(new Color3f(0.1f, 0.2f, 0.2f),
 304                         new Color3f(0.0f, 0.0f, 0.0f), new Color3f(0.3f, 0.4f, 0.4f),
 305                         new Color3f(0.3f, 0.3f, 0.3f), 0.0f));
 306                 plane = new Box(10f, 0.04f, 10f, planeAppearance);
 307                 objTrans.addChild(plane);
 308
 309                 // Image on top of base plane, if specified
 310                 final boolean showTerrain = _terrainDefinition != null && _terrainDefinition.getUseTerrain();
 311                 if (_baseImage != null && !showTerrain)
 312                 {
 313                         QuadArray baseSquare = new QuadArray (4, QuadArray.COORDINATES | GeometryArray.TEXTURE_COORDINATE_2);
 314                         baseSquare.setCoordinate(0, new Point3f(-10f, 0.05f, -10f));
 315                         baseSquare.setCoordinate(1, new Point3f(-10f, 0.05f, 10f));
 316                         baseSquare.setCoordinate(2, new Point3f( 10f, 0.05f, 10f));
 317                         baseSquare.setCoordinate(3, new Point3f( 10f, 0.05f, -10f));
 318                         // and set anchor points for the texture
 319                         baseSquare.setTextureCoordinate(0, 0, new TexCoord2f(0.0f, 1.0f));
 320                         baseSquare.setTextureCoordinate(0, 1, new TexCoord2f(0.0f, 0.0f));
 321                         baseSquare.setTextureCoordinate(0, 2, new TexCoord2f(1.0f, 0.0f));
 322                         baseSquare.setTextureCoordinate(0, 3, new TexCoord2f(1.0f, 1.0f));
 323                         // Set appearance including image
 324                         Appearance baseAppearance = new Appearance();
 325                         Texture mapImage = new TextureLoader(_baseImage.getImage(), _frame).getTexture();
 326                         baseAppearance.setTexture(mapImage);
 327                         objTrans.addChild(new Shape3D(baseSquare, baseAppearance));
 328                 }
 329
 330                 // Create model containing track information
 331                 _model = new ThreeDModel(_track);
 332                 _model.setAltitudeFactor(_altFactor);
 333
 334                 if (showTerrain)
 335                 {
 336                         TerrainHelper terrainHelper = new TerrainHelper(_terrainDefinition.getGridSize());
 337                         // See if there's a previously saved terrain track we can reuse
 338                         Track terrainTrack = TerrainCache.getTerrainTrack(_dataStatus, _terrainDefinition);
 339                         if (terrainTrack == null)
 340                         {
 341                                 // Construct the terrain track according to these extents and the grid size
 342                                 terrainTrack = terrainHelper.createGridTrack(_track);
 343                                 // Get the altitudes from SRTM for all the points in the track
 344                                 LookupSrtmFunction srtmLookup = (LookupSrtmFunction) FunctionLibrary.FUNCTION_LOOKUP_SRTM;
 345                                 srtmLookup.begin(terrainTrack);
 346                                 while (srtmLookup.isRunning())
 347                                 {
 348                                         try {
 349                                                 Thread.sleep(750);  // just polling in a wait loop isn't ideal but simple
 350                                         }
 351                                         catch (InterruptedException e) {}
 352                                 }
 353
 354                                 // Fix the voids
 355                                 terrainHelper.fixVoids(terrainTrack);
 356
 357                                 // Store this back in the cache, maybe we'll need it again
 358                                 TerrainCache.storeTerrainTrack(terrainTrack, _dataStatus, _terrainDefinition);
 359                         }
 360                         // else System.out.println("Yay - reusing the cached track!");
 361
 362                         // Give the terrain definition to the _model as well
 363                         _model.setTerrain(terrainTrack);
 364                         _model.scale();
 365
 366                         objTrans.addChild(createTerrain(_model, terrainHelper, _baseImage));
 367                 }
 368                 else
 369                 {
 370                         // No terrain, so just scale the model as it is
 371                         _model.scale();
 372                 }
 373
 374                 // N, S, E, W
 375                 GeneralPath bevelPath = new GeneralPath();
 376                 bevelPath.moveTo(0.0f, 0.0f);
 377                 for (int i=0; i<91; i+= 5) {
 378                         bevelPath.lineTo((float) (0.1 - 0.1 * Math.cos(Math.toRadians(i))),
 379                           (float) (0.1 * Math.sin(Math.toRadians(i))));
 380                 }
 381                 for (int i=90; i>0; i-=5) {
 382                         bevelPath.lineTo((float) (0.3 + 0.1 * Math.cos(Math.toRadians(i))),
 383                           (float) (0.1 * Math.sin(Math.toRadians(i))));
 384                 }
 385                 Font3D compassFont = new Font3D(
 386                         new Font(CARDINALS_FONT, Font.PLAIN, 1),
 387                         new FontExtrusion(bevelPath));
 388                 objTrans.addChild(createCompassPoint(I18nManager.getText("cardinal.n"), new Point3f(0f, 0f, -11.5f), compassFont));
 389                 objTrans.addChild(createCompassPoint(I18nManager.getText("cardinal.s"), new Point3f(0f, 0f, 11.5f), compassFont));
 390                 objTrans.addChild(createCompassPoint(I18nManager.getText("cardinal.w"), new Point3f(-11.5f, 0f, 0f), compassFont));
 391                 objTrans.addChild(createCompassPoint(I18nManager.getText("cardinal.e"), new Point3f(11.5f, 0f, 0f), compassFont));
 392
 393                 // Add points to model
 394                 objTrans.addChild(createDataPoints(_model));
 395
 396                 // Create lights
 397                 BoundingSphere bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
 398                 AmbientLight aLgt = new AmbientLight(new Color3f(1.0f, 1.0f, 1.0f));
 399                 aLgt.setInfluencingBounds(bounds);
 400                 objTrans.addChild(aLgt);
 401
 402                 PointLight pLgt = new PointLight(new Color3f(1.0f, 1.0f, 1.0f),
 403                         new Point3f(0f, 0f, 2f), new Point3f(0.25f, 0.05f, 0.0f) );
 404                 pLgt.setInfluencingBounds(bounds);
 405                 objTrans.addChild(pLgt);
 406
 407                 PointLight pl2 = new PointLight(new Color3f(0.8f, 0.9f, 0.4f),
 408                         new Point3f(6f, 1f, 6f), new Point3f(0.2f, 0.1f, 0.05f) );
 409                 pl2.setInfluencingBounds(bounds);
 410                 objTrans.addChild(pl2);
 411
 412                 PointLight pl3 = new PointLight(new Color3f(0.7f, 0.7f, 0.7f),
 413                         new Point3f(0.0f, 12f, -2f), new Point3f(0.1f, 0.1f, 0.0f) );
 414                 pl3.setInfluencingBounds(bounds);
 415                 objTrans.addChild(pl3);
 416
 417                 // Have Java 3D perform optimizations on this scene graph.
 418                 objRoot.compile();
 419
 420                 return objRoot;
 421         }
 422
 423
 424         /**
 425          * Create a text object for compass point, N S E or W
 426          * @param inText text to display
 427          * @param inLocn position at which to display
 428          * @param inFont 3d font to use
 429          * @return compound object
 430          */
 431         private TransformGroup createCompassPoint(String inText, Point3f inLocn, Font3D inFont)
 432         {
 433                 Text3D txt = new Text3D(inFont, inText, inLocn, Text3D.ALIGN_FIRST, Text3D.PATH_RIGHT);
 434                 Material mat = new Material(new Color3f(0.5f, 0.5f, 0.55f),
 435                         new Color3f(0.05f, 0.05f, 0.1f), new Color3f(0.3f, 0.4f, 0.5f),
 436                         new Color3f(0.4f, 0.5f, 0.7f), 70.0f);
 437                 mat.setLightingEnable(true);
 438                 Appearance app = new Appearance();
 439                 app.setMaterial(mat);
 440                 Shape3D shape = new Shape3D(txt, app);
 441
 442                 // Make transform group with billboard behaviour
 443                 TransformGroup subGroup = new TransformGroup();
 444                 subGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
 445                 subGroup.addChild(shape);
 446                 Billboard billboard = new Billboard(subGroup, Billboard.ROTATE_ABOUT_POINT, inLocn);
 447                 BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
 448                 billboard.setSchedulingBounds(bounds);
 449                 subGroup.addChild(billboard);
 450                 return subGroup;
 451         }
 452
 453
 454         /**
 455          * Make a Group of the data points to be added
 456          * @param inModel model containing data
 457          * @return Group object containing spheres, rods etc
 458          */
 459         private static Group createDataPoints(ThreeDModel inModel)
 460         {
 461                 // Add points to model
 462                 Group group = new Group();
 463                 int numPoints = inModel.getNumPoints();
 464                 for (int i=0; i<numPoints; i++)
 465                 {
 466                         byte pointType = inModel.getPointType(i);
 467                         if (pointType == ThreeDModel.POINT_TYPE_WAYPOINT)
 468                         {
 469                                 // Add waypoint
 470                                 // Note that x, y and z are horiz, altitude, -vert
 471                                 group.addChild(createWaypoint(new Point3d(
 472                                         inModel.getScaledHorizValue(i) * MODEL_SCALE_FACTOR,
 473                                         inModel.getScaledAltValue(i)   * MODEL_SCALE_FACTOR,
 474                                         -inModel.getScaledVertValue(i) * MODEL_SCALE_FACTOR)));
 475                         }
 476                         else
 477                         {
 478                                 // Add colour-coded track point
 479                                 // Note that x, y and z are horiz, altitude, -vert
 480                                 group.addChild(createTrackpoint(new Point3d(
 481                                         inModel.getScaledHorizValue(i) * MODEL_SCALE_FACTOR,
 482                                         inModel.getScaledAltValue(i)   * MODEL_SCALE_FACTOR,
 483                                         -inModel.getScaledVertValue(i) * MODEL_SCALE_FACTOR), inModel.getPointHeightCode(i)));
 484                         }
 485                 }
 486                 return group;
 487         }
 488
 489
 490         /**
 491          * Create a waypoint sphere
 492          * @param inPointPos position of point
 493          * @return Group object containing sphere
 494          */
 495         private static Group createWaypoint(Point3d inPointPos)
 496         {
 497                 Material mat = getWaypointMaterial();
 498                 // MAYBE: sort symbol scaling
 499                 Sphere dot = new Sphere(0.35f); // * symbolScaling / 100f);
 500                 return createBall(inPointPos, dot, mat);
 501         }
 502
 503
 504         /**
 505          * @return a new Material object to define waypoint colour / shine etc
 506          */
 507         private static Material getWaypointMaterial()
 508         {
 509                 return new Material(new Color3f(0.1f, 0.1f, 0.4f),
 510                          new Color3f(0.0f, 0.0f, 0.0f), new Color3f(0.0f, 0.2f, 0.7f),
 511                          new Color3f(1.0f, 0.6f, 0.6f), 40.0f);
 512         }
 513
 514
 515         /**
 516          * @return track point object
 517          */
 518         private static Group createTrackpoint(Point3d inPointPos, byte inHeightCode)
 519         {
 520                 Material mat = getTrackpointMaterial(inHeightCode);
 521                 // MAYBE: sort symbol scaling
 522                 Sphere dot = new Sphere(0.2f);
 523                 return createBall(inPointPos, dot, mat);
 524         }
 525
 526
 527         /**
 528          * @return Material object for track points with the appropriate colour for the height
 529          */
 530         private static Material getTrackpointMaterial(byte inHeightCode)
 531         {
 532                 // create default material
 533                 Material mat = new Material(new Color3f(0.3f, 0.2f, 0.1f),
 534                         new Color3f(0.0f, 0.0f, 0.0f), new Color3f(0.0f, 0.6f, 0.0f),
 535                         new Color3f(1.0f, 0.6f, 0.6f), 70.0f);
 536                 // change colour according to height code
 537                 if (inHeightCode == 1) mat.setDiffuseColor(new Color3f(0.4f, 0.9f, 0.2f));
 538                 else if (inHeightCode == 2) mat.setDiffuseColor(new Color3f(0.7f, 0.8f, 0.2f));
 539                 else if (inHeightCode == 3) mat.setDiffuseColor(new Color3f(0.3f, 0.6f, 0.4f));
 540                 else if (inHeightCode == 4) mat.setDiffuseColor(new Color3f(0.1f, 0.9f, 0.9f));
 541                 else if (inHeightCode >= 5) mat.setDiffuseColor(new Color3f(1.0f, 1.0f, 1.0f));
 542                 // return object
 543                 return mat;
 544         }
 545
 546
 547         /**
 548          * Create a ball at the given point
 549          * @param inPosition scaled position of point
 550          * @param inSphere sphere object
 551          * @param inMaterial material object
 552          * @return Group containing sphere
 553          */
 554         private static Group createBall(Point3d inPosition, Sphere inSphere, Material inMaterial)
 555         {
 556                 Group group = new Group();
 557                 // Create ball and add to group
 558                 Transform3D ballShift = new Transform3D();
 559                 ballShift.setTranslation(new Vector3d(inPosition));
 560                 TransformGroup ballShiftTrans = new TransformGroup(ballShift);
 561                 inMaterial.setLightingEnable(true);
 562                 Appearance ballApp = new Appearance();
 563                 ballApp.setMaterial(inMaterial);
 564                 inSphere.setAppearance(ballApp);
 565                 ballShiftTrans.addChild(inSphere);
 566                 group.addChild(ballShiftTrans);
 567                 // Also create rod for ball to sit on
 568                 Cylinder rod = new Cylinder(0.1f, (float) inPosition.y);
 569                 Material rodMat = new Material(new Color3f(0.2f, 0.2f, 0.2f),
 570                         new Color3f(0.0f, 0.0f, 0.0f), new Color3f(0.2f, 0.2f, 0.2f),
 571                         new Color3f(0.05f, 0.05f, 0.05f), 0.4f);
 572                 rodMat.setLightingEnable(true);
 573                 Appearance rodApp = new Appearance();
 574                 rodApp.setMaterial(rodMat);
 575                 rod.setAppearance(rodApp);
 576                 Transform3D rodShift = new Transform3D();
 577                 rodShift.setTranslation(new Vector3d(inPosition.x, inPosition.y/2.0, inPosition.z));
 578                 TransformGroup rodShiftTrans = new TransformGroup(rodShift);
 579                 rodShiftTrans.addChild(rod);
 580                 group.addChild(rodShiftTrans);
 581                 // return the pair
 582                 return group;
 583         }
 584
 585         /**
 586          * Create a java3d Shape for the terrain
 587          * @param inModel threedModel
 588          * @param inHelper terrain helper
 589          * @param inBaseImage base image for shape, or null for no image
 590          * @return Shape3D object
 591          */
 592         private static Shape3D createTerrain(ThreeDModel inModel, TerrainHelper inHelper, GroutedImage inBaseImage)
 593         {
 594                 final int numNodes = inHelper.getGridSize();
 595                 final int RESULT_SIZE = numNodes * (numNodes * 2 - 2);
 596                 int[] stripData = inHelper.getStripLengths();
 597
 598                 // Get the scaled terrainTrack coordinates (or just heights) from the model
 599                 final int nSquared = numNodes * numNodes;
 600                 Point3d[] rawPoints = new Point3d[nSquared];
 601                 for (int i=0; i<nSquared; i++)
 602                 {
 603                         double height = inModel.getScaledTerrainValue(i) * MODEL_SCALE_FACTOR;
 604                         rawPoints[i] = new Point3d(inModel.getScaledTerrainHorizValue(i) * MODEL_SCALE_FACTOR,
 605                                 Math.max(height, 0.05), // make sure it's above the box
 606                                 -inModel.getScaledTerrainVertValue(i) * MODEL_SCALE_FACTOR);
 607                 }
 608
 609                 GeometryInfo gi = new GeometryInfo(GeometryInfo.TRIANGLE_STRIP_ARRAY);
 610                 gi.setCoordinates(inHelper.getTerrainCoordinates(rawPoints));
 611                 gi.setStripCounts(stripData);
 612
 613                 Appearance tAppearance = new Appearance();
 614                 if (inBaseImage != null)
 615                 {
 616                         gi.setTextureCoordinateParams(1, 2); // one coord set of two dimensions
 617                         gi.setTextureCoordinates(0, inHelper.getTextureCoordinates());
 618                         Texture mapImage = new TextureLoader(inBaseImage.getImage()).getTexture();
 619                         tAppearance.setTexture(mapImage);
 620                         TextureAttributes texAttr = new TextureAttributes();
 621                         texAttr.setTextureMode(TextureAttributes.MODULATE);
 622                         tAppearance.setTextureAttributes(texAttr);
 623                 }
 624                 else
 625                 {
 626                         Color3f[] colours = new Color3f[RESULT_SIZE];
 627                         Color3f terrainColour = new Color3f(0.1f, 0.2f, 0.2f);
 628                         for (int i=0; i<RESULT_SIZE; i++) {colours[i] = terrainColour;}
 629                         gi.setColors(colours);
 630                 }
 631                 new NormalGenerator().generateNormals(gi);
 632                 Material terrnMat = new Material(new Color3f(0.4f, 0.4f, 0.4f), // ambient colour
 633                         new Color3f(0f, 0f, 0f), // emissive (none)
 634                         new Color3f(0.8f, 0.8f, 0.8f), // diffuse
 635                         new Color3f(0.2f, 0.2f, 0.2f), //specular
 636                         30f); // shinyness
 637                 tAppearance.setMaterial(terrnMat);
 638                 return new Shape3D(gi.getGeometryArray(), tAppearance);
 639         }
 640
 641         /**
 642          * Calculate the angles and call them back to the app
 643          * @param inFunction function to call for export
 644          */
 645         private void callbackRender(Export3dFunction inFunction)
 646         {
 647                 Transform3D trans3d = new Transform3D();
 648                 _orbit.getViewingPlatform().getViewPlatformTransform().getTransform(trans3d);
 649                 Matrix3d matrix = new Matrix3d();
 650                 trans3d.get(matrix);
 651                 Point3d point = new Point3d(0.0, 0.0, 1.0);
 652                 matrix.transform(point);
 653                 // Set up initial rotations
 654                 Transform3D firstTran = new Transform3D();
 655                 firstTran.rotY(Math.toRadians(-INITIAL_Y_ROTATION));
 656                 Transform3D secondTran = new Transform3D();
 657                 secondTran.rotX(Math.toRadians(-INITIAL_X_ROTATION));
 658                 // Apply inverse rotations in reverse order to the test point
 659                 Point3d result = new Point3d();
 660                 secondTran.transform(point, result);
 661                 firstTran.transform(result);
 662
 663                 // Give the settings to the rendering function
 664                 inFunction.setCameraCoordinates(result.x, result.y, result.z);
 665                 inFunction.setAltitudeExaggeration(_altFactor);
 666                 inFunction.setTerrainDefinition(_terrainDefinition);
 667                 inFunction.setImageDefinition(_imageDefinition);
 668
 669                 inFunction.begin();
 670         }
 671 }